The Model 3 SR+ for new customers is configured to permit 250 miles EPA. For those having the version at 240 miles EPA, a paid option should be available to permit to upgrade to 250 miles EPA. The price of the SR+ has been raised by about $500 USD.
When using autopilot on country roads, we don't alway want to be at the exact center of the lane. We usually need to be a little more at the right of the lane to get more distance between the car and the other cars coming from the opposite direction.